1. RedHat Family

For automatic packages installation for both architecutes i686 and x86_64 (accordiing to yum manual) in your 64-bit system add as root to/etc/yum.conf the line:multilib_policy=all and run the command as rootyum update

You can install a 32-bit package in your 64-bit system by adding the ".i686" as suffix for the package.

sudo yum install cairo-devel.i686sudo yum install pango-devel.i686

On SUSE Linux : You can install a 32-bit package in your 64-bit system by adding the "-32bit" as suffix for the package.